Pump.



PATENTED JAN. 3l, 1905.

H. H. ARKWRIGHT.

PUMP.

APPLIGATION FILED un e, 1904.

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Patented January 31, 1905.

ATENT FFICE.

PUIVIP.

SPECIFICATION forming part of Letters Patent No. 781,583, dated January31, 1905.

' Application tiled May 6,1904. Serial No. 206,717.

Be it known that I, HARRISON H. Aintwi-znzn'r, a citizen ot' the UnitedStates. residing at Montpelier, in the county ot' "illiams` State olOhio. have invented certain new and nset'ul Imtnovementsin Pumps; andIdohereby declare the following to be a tull, clear, and exactdescription ot' the invention. such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to pumps, and more particularly to that classemployed in connection with deep wells. although it will be understoodfrom the following description that it will .)perate with equaletticiency in shallow wells.

The object ot the invention is to provide a constructionwherein therewill be produced a continuous tlow ot water and in which there will herequired a minimum ot energy in its operation.

A further object ot' the invention is to provide such a speciticconstruction and arrangement ot parts as will insure against excessivewear and which will maintain the working parts tightly packed to preventleakage.

Other objects and advantages ot' the invention will be understood fromthe Afollowing description.

ln the drawings t'orming a portion ot this specitication. and in whichlike numerals ot' reference indicate similar parts in the several views`Figure l isa view showinga portion ol' a pump embodying the presentinvention. Fig. 2 is a view partly in section and partly in elevation`showing the pistons on an enlarged scale.

l\ \l'erring now to the drawings, there is shown a portion ot apump-barrel 5, having at the bottom the usual upwardly-opening valve t3.Instead otl the usual single piston there is employed in the presentconstruction two pistons. The lower piston consists ot a tubular memberel the lower end portion ot which is reduced in diameter and providedwith threads t). above which threads the member 8 is gradually increasedin exterior diameter.and upon this portion is disposed a leather washerlll. Acompression-nut 11 is engaged with the threads 9.and when screwedthereonto Vforces the washer l() upon the tapered portion ot` the body8, so that the washer is expanded and made to lit the pump-barrelwater-tight. Upon the body portion S is a cage 12, in which is a valvecomprising the vertically-spaced disks I3 and le and the connecting-steml5, the disk l-t being adapted to rest in a seat I6 at the bottom ot'the cage to close the passage IT in the body 8 against downward liow ot'water. 'l`he valve has sufiicient vertical movement in the cage to moveout ot the seat iti and permit upward tlow ot water through the passageiT.

The cage l2 comprises vertical bars, which are spaced and connected attheir upper ends i to an interiorly-threaded collar 18, in which 1sengaged a threaded cylindrical plugl), having a threaded socket in itsupper end which communicates with a transverse passage 2l. In the socket20 is engaged the threaded lower end ot' a piston-rod or pumprod whichis connected in any suitable manner with the usual wooden pump-rod Q3.This structure torms one ot' the pistons ot' a pump, the plug 19t'orming a convenient means ot' connecting the rod with the lower pistonand the passage QI serving to receive a bar to facilitate screwing andunscrewing the plug. ln connection with the piston just described thereis employed an upper piston including a downwardly exteriorly taperedbody portion 25. below which is an interiorlythreaded cylindricalportion Qt, in which is engaged a bushing 2T. having a llange 28 at itsouter end` which llange is adapted to press against a leather washer 22)and torce the latter onto the tapered portion ot the piston when thebushing is screwed into the body, so that the washer will be expandedagainst the inner surt'aeeot the pump-barrel to t'orrn awater-tightjoint. li'romthe bushingZS extend downwardly the convergentarmstl, connected by a collar 3l, through which the rod passes. 'lhelower end otl the bore of the collar 31 is count-ersunken to receivepacking 32, and a cap 3l) is engaged with the exterior threads ot thecollar to compress the packing in the well-known manner, this packingserving to take up any wear and hold the rod Q2 at all times centrallyot the collar. \Vithin TOO the tapered portion of the body 25 is acylindrical guide 34, supported or held in place by the radiating' arms35, the lower end of the bore of the guide being countersunken andscrew-threadedV to receive a bushing 36, which is adapted to compresspacking material 37 in the inner end of the countersinli, so that itwill tit tightly about the rod 22 and form a water-tight joint, whilepermitting' of free movement of the rod. From the body portion 25 thereextends upwardly a cage, including spaced arms 38, and within this cageis disposed a valve 39, having a rubber or other suitable lower face 40,which is adapted to rest upon the guide 34 and the seat 4l at the basesof the arms 38 to close the passages between the arms 35 againstdownward passage of water, the valve having sufficient vertical movementto permit of upward passage of water. rl`he arms 38 are connectedl attheir upper ends by the sleeve 42, through which the rod 22 snuglypasses and which is exteriorly threaded to receive a coupling 43, whichconnects with the lower tubular portion 44 of the connector, the upperportion of which is semicylindrical and is connected with the usualwooden pump-rod 45 by means of rivcts 46 or in any other suitablemanner. lith this construction it will be understood that one piston maybe moved downwardly while the other is being `moved upwardly and thateach piston in its upward movement will lift water, the lower pistonserving to force the water through the upper piston during the uppermovement of the former and the downward movement of the latter and theupper piston serving' to continue the upward movement of the waterduring the upward move: ment of the upper piston and. the downwardmovement of the lower piston.

It will be understood, of course, that the pistons may be reciprocatedin any suitable manner; but there is shown a rocker 50, pivoted to theside of the upper portion of the pump-barrel and having a handle 5l foroscillating it. The ends of the rocker are connected by rods 52 and 53with the upper end portions of the pump-rods 45 and 23. Each of thepump-rods is of course formed in sections when used in a deep well, thewooden sections having metal end pieces 54 fastened thereto,which arethreaded and connected by' a common form of coupling' 55, the end pieces54 having right and left threads. The upper ends of the uppermost woodenpump-rod sections are provided with metal plates 56, with which the rods52 and 53 are pivotally connected.

It will be understood thatin practice modiiications of the specificconstruction shown may be made and any suitable materials andproportions may be used for the various parts without departing from thespirit of the invention.

/Vhat is claimed is- In a pump, the combination with a barrel having anupwardly-opening valve at its lower end, of a lower piston slidablymounted in the barrel, a rod for the lower piston, an upwardly-openingvalve in said piston, an upper piston comprising' a body portion, aportion of which is tapered, a washer disposed upon the tapered portion,a bushing engaged in the body and provided with a iiange disposed toengage and move the washer upon the tapered portion, a collar connectedwith and spaced below the bushing and through which the rod of the lowerpiston is slidably passed, a stuiing-box for said rod carried by thecollar, a guide in the upper piston through which said rod is passed, astuffing-box for the rod in said guide, a valve-seat including the upperend of the guide, a valve for said seat slidably engaged with the rod, arod connected with the upper piston, and means for reciprocating saidrods oppositely.

In testimony whereof I aflx my signature in presence of two witnesses.

HARRISON H. ARKVRIGHT.

fitnessesz Guo. H. CHANDLEE, J os. H. BLAoKwooD.

